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| Mirrors > Home > MPE Home > Th. List > vsnid | Structured version Visualization version GIF version | ||
| Description: A setvar variable is a member of its singleton. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| vsnid | ⊢ 𝑥 ∈ {𝑥} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vex 3460 | . 2 ⊢ 𝑥 ∈ V | |
| 2 | 1 | snid 4623 | 1 ⊢ 𝑥 ∈ {𝑥} |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2144 {csn 4584 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-ext 2736 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-tru 1565 df-ex 1802 df-sb 2093 df-clab 2743 df-cleq 2756 df-clel 2839 df-v 3458 df-sn 4585 |
| This theorem is referenced by: exsnrex 4641 rext 5417 unipw 5419 xpdifid 6155 xpdifcnvepel 6156 opabiota 6951 fnressn 7143 fressnfv 7145 snnex 7743 frrlem12 8280 frrlem14 8282 mapsnd 8870 findcard2d 9137 ac6sfi 9230 iunfi 9288 elirrvOLDOLD 9549 kmlem2 10110 fin1a2lem10 10368 hsmexlem4 10388 iunfo 10498 modfsummodslem1 15822 lcmfunsnlem2lem1 16674 coprmprod 16697 coprmproddvdslem 16698 c0snmgmhm 20513 lbsextlem4 21233 frlmlbs 21851 coe1fzgsumdlem 22368 evl1gsumdlem 22421 maducoeval2 22702 dishaus 23444 dis2ndc 23522 dislly 23559 dissnlocfin 23591 comppfsc 23594 txdis 23694 txdis1cn 23697 txkgen 23714 isufil2 23970 alexsubALTlem4 24112 tmdgsum 24157 dscopn 24635 ovolfiniun 25565 volfiniun 25611 jensen 27055 uvtx01vtx 29600 cplgr1vlem 29632 unidifsnel 32736 gsumpart 33245 dflring3 33695 mplidomlem 33826 vieta 33879 extdg1id 33965 irngss 33986 esum2dlem 34391 bnj1498 35358 funen1cnv 35384 fineqvnttrclselem2 35422 wevgblacfn 35458 cvmlift2lem1 35657 funpartlem 36297 ttcid 36857 topdifinffinlem 37846 fvineqsneq 37911 pibt2 37916 finixpnum 38109 mbfresfi 38170 pclfinN 40529 sn-iotalem 42845 mzpcompact2lem 43337 dvmptfprod 46524 fourierdlem48 46733 sge0sup 46970 funressnvmo 47644 dfclnbgr6 48483 dfsclnbgr6 48485 termco 50107 termcarweu 50154 diag1f1o 50160 diag2f1o 50163 |
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